To do what? To cover the wood pile! I do not mean to rattle anyone's chain with this thread but only give reasons for covering or not covering. First, we cut all of our wood in the winter. We have cut a tree or two in the summer but this is not best. We do our splitting in the spring and then stack it. We try to get this done before May if possible. After we stack the wood, we then just forget about it until late fall or early winter. It is then we cover our wood piles. Why do we leave our wood piles uncovered that first summer and fall? For evaporation. Look at a water pot on the stove. Water evaporates....and the moisture goes up. Would it not do the same in a wood pile? However, if that wood pile is covered... Also, if the wood is covered, it does not get any benefit from any sunshine. As for rain, it does not hurt at all. Wood is not a sponge so rain will just run right off. After an all day rain, the next day the wood pile is usually dry before the day is done. So some say, what about the wood out in the woods that rots because it sits in the rain all the time. However, have you ever noticed if wood sits on the ground, then it rots fast. But, if you have a leaner, that is, most or all of the tree is kept up off the ground, then it takes a long time to rot. You can even go out right after a rain or two days after a rain, cut that log and you will find that the rain did not penetrate the log....as long as the log wasn't already punky. It's the same with our wood pile. Up off the ground it is not going to rot (for a long time) and is not going to soak up rain. Naturally there is an exception to every rule. The Pacific NW for example where those folks don't seem able to turn the rain off much. There, I would probably cover the wood after stacking, but I would experiment too. That is, I would stack a long row of wood. I'd cover only half of it and then see what if any difference there would be in the wood.